<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="../../jquery.min.js"></script>
    <style>
        .sky{
            color:red;
        }
    </style>
    <script>
        $(function () {
            $(".sky").load("txtwenjian.txt");
        })
    </script>
</head>
<body>
    <div class="sky">
        123
    </div>
</body>
</html>